Study the information about adjective + to.
1. Adjective + the infinitive (to)
Use this structure with adjectives: difficult, easy, hard, impossible, dangerous, safe, expensive, cheap, nice, good, interesting, exciting.
Do you think it is safe to drink this water?
![drinking-water.jpg](https://resources.cdn.miyklas.com.ua/a6b95aa7-8a2a-47d1-8b5f-0ab3eaebdb3c/drinking-water.jpg)
It is interesting to play with Jim.
2. It is nice of you to...
You can use many other adjectives: kind, sensible, sad, amazed, careless, unfair, considerate, silly.
![quit-my-job.jpg](https://resources.cdn.miyklas.com.ua/039339eb-389b-4a82-9bfb-a3c54f103bbc/quit-my-job.jpg)
3. I am sorry to/I was surprised to…
Use the structure adjective + to if you want to say how somebody reacts to something.
Other adjectives for this purpose: happy, glad, pleased, sad, disappointed, surprised, amazed, astonished, relieved.
![bigstock-Surprised-Beauty-6228700.jpg](https://resources.cdn.miyklas.com.ua/0fe51086-9f87-4cba-bbad-34bf62198660/bigstock-Surprised-Beauty-6228700.jpg)
4. Use to after the first, the last, the next, the only, the second.
He is the first to orbit the Earth.
5. Something is sure/certain/likely/bound to happen.
Jim is a good student. He’s bound to pass this test.